Response of photosynthetic apparatus in Arabidopsis thaliana L. mutant deficient in phytochrome A and B to UV-B

V. D. Kreslavski, A. N. Shmarev, V. Yu Lyubimov, G. A. Semenova, S. K. Zharmukhamedov, G. N. Shirshikova, A. Yu Khudyakova, Suleyman Allakhverdiev

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The effects of UV-B radiation (1 W m–2, 1 and 2 h) on PSII activity, chloroplast structure, and H2O2 contents in leaves of 26-d-old Arabidopsis thaliana phyA phyB double mutant (DMut) compared with the wild type (WT) were investigated. UV-B decreased PSII activity and affected the H2O2 content in WT and DMut plants grown under white light (WL). The chloroplast structure changes in DMut plants exposed to UV were more significant than that in WT. Reductions in maximal and real quantum photochemical yields and increase in the value of thermal dissipation of absorbed light energy per PSII RC and the amount of QB-nonreducing centers of PSII were bigger in mutant compared to WT plants grown both under WL and red light. Such difference in action of UV-B on WT and DMut can be explained by higher content of UV-absorbing pigments and carotenoids in WT leaves compared with DMut.

Original languageEnglish
Pages (from-to)418-426
Number of pages9
JournalPhotosynthetica
Volume56
Issue number1
DOIs
Publication statusPublished - Mar 1 2018
Externally publishedYes

Keywords

  • chloroplast structure
  • fluorescence of Chl a
  • photosystem II
  • phytochrome mutants
  • stress
  • ultraviolet

ASJC Scopus subject areas

  • Physiology
  • Plant Science

Fingerprint Dive into the research topics of 'Response of photosynthetic apparatus in Arabidopsis thaliana L. mutant deficient in phytochrome A and B to UV-B'. Together they form a unique fingerprint.

  • Cite this

    Kreslavski, V. D., Shmarev, A. N., Lyubimov, V. Y., Semenova, G. A., Zharmukhamedov, S. K., Shirshikova, G. N., Khudyakova, A. Y., & Allakhverdiev, S. (2018). Response of photosynthetic apparatus in Arabidopsis thaliana L. mutant deficient in phytochrome A and B to UV-B. Photosynthetica, 56(1), 418-426. https://doi.org/10.1007/s11099-017-0754-8